Her second cake was a five tiered purple and white design with the host venue emblazoned all over it.

Putting it behind her: Nicole has been the centre of negative reports after she replaced original judge Cheryl Cole from the panel of the upcoming television talent show

Nicole wasted no time in getting into the sweet treat and took a big bite out of the top layer.

She partied to the sounds of DJ Roger Sanchez who was spinning on the decks for the occasion.

The singer has been flitting around the country performing her duties as a judge on the U.S. X Factor after the ousting of Cheryl Cole saw her go from host to being part of the panel.

She has recently gushed about her close relationship with fellow judges Simon Cowell and Paula Abdul.

Sweet treat: The soon to be 33-year-old also enjoyed a daytime party Marquee Dayclub where she wasted no time in taking a bit out of her cake

Nicole said: 'I'm not there to get in between them - I get a front row ticket to the Paula and Simon show every week.'

'I'm fascinated watching them because they've been together for over 10 years,' she added.

'It's such an honour for me to be part of the panel as an artist in today's music industry,' the star said.

Not pictured at the bash was her boyfriend and Formula One driving ace Lewis Hamilton.

The pair were last pictured at premiere for Disney's Car 2 in Hollywood last week.

Daytime chic: Nicole looked stunning in a strapless leopard print dress as she partied with the other revellers

Nicole has hit back at her former manager Jeff Haddad who told British tabloid Now magazine that X Factor bosses had secretly plotted to have her as a judge all along.

But Nicole told Houston-based syndicated radio show Kidd Kraddick in the Morning that it is not true.

Loved up: Nicole attended a Hollywood premiere with boyfriend Lewis Hamilton last week - they've been dating for two years

'That's such gossip, man. I was very hurt by that because it was my ex-manager who said that. It just unfortunately goes to show how much he doesn't know, because the people at Fremantle and all the powers that be have no idea who he is because wasn't involved. It was a hard process for me and I'm sure for Cheryl.'

'I started out as a co-host, and I loved the job. I got to meet families and all the contestants and a lot of spend time with them.